lkml.org 
[lkml]   [2020]   [Apr]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: usb: gadget: fsl_udc_core: Checking for a failed platform_get_irq() call in fsl_udc_probe()
On Wed, Apr 8, 2020 at 9:19 AM Markus Elfring <Markus.Elfring@web.de> wrote:
>
> Hello,
>
> I have taken another look at the implementation of the function “fsl_udc_probe”.
> A software analysis approach points the following source code out for
> further development considerations.
> https://elixir.bootlin.com/linux/v5.6.2/source/drivers/usb/gadget/udc/fsl_udc_core.c#L2443
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/gadget/udc/fsl_udc_core.c?id=f5e94d10e4c468357019e5c28d48499f677b284f#n2442
>
> udc_controller->irq = platform_get_irq(pdev, 0);
> if (!udc_controller->irq) {
> ret = -ENODEV;
> goto err_iounmap;
> }
>
>
> The software documentation is providing the following information
> for the used programming interface.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/base/platform.c?id=f5e94d10e4c468357019e5c28d48499f677b284f#n221
> https://elixir.bootlin.com/linux/v5.6.2/source/drivers/base/platform.c#L202
>
> “…
> * Return: IRQ number on success, negative error number on failure.
> …”
>
> Would you like to reconsider the shown condition check?

Thanks for the finding. This is truly a software issue that need to
be fixed. Would you submit a patch for it or you want us to fix it?

Regards,
Leo

\
 
 \ /
  Last update: 2020-04-09 00:48    [W:0.043 / U:1.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site